Fix trailing whitespace in .cpp, .h, and .idl files (ex. Source/core)

Source/bindings/v8/V8Initializer.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 17 matching lines @@
 
 #include <v8.h>
 
 namespace WebCore {
 
 class V8Initializer {
 public:
     static void initializeMainThreadIfNeeded(v8::Isolate*);
     static void initializeWorker(v8::Isolate*);
 };
-    
+
 } // namespace WebCore
 
 #endif // V8Initializer_h